Electric battery.



W. MORRISON.

ELECTRIC BATTERY.

APPLIOATION FILED AUG.1 1, 1902. RENEWED JULY 26, 1909.

'Patented Mar. 1,1910.

2 SHEETS-SHEET 1.

W. MORRISON ELECTRIC BATTERY. APPLICATION TILED AUG. 11, 1902. RENEWED JULY-26, 190s.

resident of Chicago, Cook county, Illinois,

the e and other incidental results I employ through the cell on the line 22.

UNITED STATES PATENT OFFICE.

WILLIAM MORRISON, OF CHICAGO, ILLINOIS.

ELECTRIC BATTERY.

Application filed August '11, 1902, Serial No. 119,205. Renewed July 26, 1909. Serial No. 509,700.

To all whom it may concern: 7 1 lle it known that I, \VILLIAM MomusoN, a l citizen of the United States of America, and l have in vented a certain new and useful Improvelmnt in Electric Batteries, of which I the following is a specification.

.l t is the object of my invention to produce a more highly etlicient battery, of longer life and oi. greater capacity. To accomplisha solution of bromid of zinc, or other suitable bromid, I

in my invention I provide a containing cell of a material capable of withstanding the attacks of the bromin when liberated. The solution of bromid of zinc is placed in the cell and in the charge the bromid of zinc is separated into zinc and bromin, the bromin being released and electrodeposited upon the bottom of the cell, the greater part thereof remaining in contact with the bottom of the cell because its specific gravity is higher than that of the electrolyte, and as it is insoluble in the electrolyte toa considerable extent, while the zinc is electrodeposited upon a suitable support.

In describing one way of carrying out my invention I shall incidentallydescribe and illustrate a containing cell of carbon the l. 0tto1nof which constitutes the negative element and also means for holding the liquid bromin more stable, but it Will be understood that I have claimed these features in other applications filed concurrently herewith, No. 119,201, my present application being contimid to the feature of the gravity bromin cel.

I will now particularly describe my invention having reference to the accompanying drawings, in which: Figure 1, is a perspective viewof a cell showing the negative element in the bottom' of the cell. Fig. 2, is-a central cross section Fig. 3, is a perspective view showing the insulator and support for the positive element. Fig. 4;, is a central cross section view of the completed cell. 'Fig. '5, is a section view on the line 33 of Fig. 4. Fig. 6 is a perspective view of the exterior of a completed cell.

The cell A as I have. shown and preferto use it, is of carbon, although in this application I do not make any claim for the material of which the cell is com osed. In the- Y bottom of the cell is forme a number of pockets, or recesses a-a, which as-the whole cell is of carbon provides a negative element having a plurality or multiplicity of pockets or recesses. Above this negative element, which may, as a whole, be designated at A, is held, at, a suitable distance. therefrom the ositive element I which consists of copperwire gauze or other suitable material. An electrolyte of bromid of zinc, or other suitable bromid, is placed in the cell.

In the charge the bromid of zinc is separated or split up intozinc and bromin, the zinc being electrodeposited upon the upper positive element B, and the bromin deposited Patented Mar. 1, 1910.

upon the negative element A in the bottom of the cell, and as the bottom of the cell is the negative element, the bromin is electrodeposited upon the negative element and tends to remain thereon its high specific gravity being higher, than that of the electrolyte and because it is to a considerable extent insoluble in the electrolyte. As shown and described herein the cell is of carbon and consequently the bottom of the cell is carbon and therefore a negative element is provided upon. which the bromin is deposited. But, however, it is evident that some kind of material other than carbon canvbe employed for the cell, such as glass for instance, and the negative element disposed upon the, bottom of the cell, and this. .constitutes another way of carrying out my invention which I have described and claimed in another application filed concurrentlyherewith, No. 119,204.

Although I have thus particularly. described and illustrated the negative element located in the bottom of the cellor as the bottom of the cell as one Way of carrying out my invention it will be understood, however, that my invention consists in a gravity bromin battery and comprehends and includes' within it any method of employing gravity to hold the liquid bromin in contact with the negative element. It is evident that this battery may be used as a primary byplacin bromin upon or over the bottom of the ce 1, and providing a suitable electrolyte, and a positive element of zinc or other suitable metal.

In order to prevent the 'electrodeposition of the bromin upon the sides of the carbon cell, which would fall oil? upon or around the edges of the negative element causing an uneven distribution of the bromin upon the negative element, I provide an insulating formation of an excessive amount of the zinc about the edges of the positive element.

Between the positive element B and the cover E are the spacing strips H which are held in a bearing ositlon between the posi tive element and t e cover, when the latter 1 tutes one terminal 0 is fastened in position u on the contained cell. A conductor strip is connected with the positive element at one end and at the other end to a bindin post A which'constithe cell, a conductor strip 1) being attached to the bottom of the cell and to its sides and terminating at the binding post J, which constitutes the other terminal of the battery.

It is also evident that the electrolyte may be of any suitable bromid or bromids.

As bromin is volatile in air and also casts off an offensive odor it is desirable that. in each case the cover should be sealed to the body of the containing cell and as shown it will be observed that the ed e of the cover fits within a groove forme in the up er edge of the containing cell and thus the e ge of'the cover may be .convemently sealed to the-containing cell by any suitable sealing material. I

In order to provido means for the escape of any gases or gaswithin the battery cell I provide a safety vent N of any ordinary and suitable construction which will release the gas automatically when any gas is within the containing cell.

I have shown and described herein all of those parts which are essential to the construction of a practical battery but it will be understood that my invention so far as this ap lication is concerned, as stated, is confine to the gravity bromin cell.

Theserial numbers of my co-pending applications are 119,201,119302, 119,203 and 119,204;

I claim' A battery, a negative element therefor provided with a sup orting surface, depositable bromin in the attery' electrolyte, said surface being contoured to independentlyretain said bromin thereon when deposited.

Signed by me at Chicago, Cook county, Illinois, this eighth da of u st, 1902.

- WILL AM It ORRISON.

Witnesses:

CnAs. C. BULKLEY, HARRY P. BAUMGARTNER. 

